Weather in Naperville in July
Naperville, United States averages a high of 27.9°C (82.2°F) and low of 18.7°C (65.7°F) in July, with 11 rain days and 11.8 hours of daily sunshine. Travel score: 83/100 (Excellent). The best time to visit Naperville is September.
High
28°C82°F
Low
19°C66°F
🌧️
11
rain days
☀️
11.8
hrs/day sunshine
💧
71%
humidity
83— Excellent
July in Naperville is warm and occasionally wet — ideal for sightseeing and outdoor activities.
What are the average temperatures in Naperville?
How much does it rain in Naperville in July?
Naperville receives an average of 95.9mm of rainfall across 11 rainy days in July. The annual total is 962.5mm.
What should I pack for Naperville in July?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
12 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
Traveling to United States in July?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31